RT Journal Article
T1 Digital image analysis and EDX SEM as combined techniques to evaluate salt damp on walls
A1 Vázquez, María Auxiliadora
A1 Galán, Emilio
A1 Ortiz, Pilar
A1 Ortiz Calderón, Rocío
K1 Digital image processing
K1 EDX elemental maps
K1 Salt on wall
K1 Mineralogical analysis
AB This work aims to use digital image analysis to characterize the superficial and in-depth regions layout/distribution of the saline phases, corresponding to efflorescences and sub-efflorescences. The possible existent saline compounds are mapped using EDX chemical element́s maps by means of logical image operations. The element́s maps are both made parallel or perpendicularly to the surface of the stonés deposit. The latter are of particular interest since they help to establish the compositional saline depth profile.The efflorescence samples were taken from the limestone siding of the Falla Chapel, in the Cathedral of Cadiz, which presents serious problems as a result of the salt crystallisation on walls.In order to validate the results obtained with the proposed digital image analysis method, a mineralogical analysis was carried out using DRX. The results produced by the digital processing techniques applied to these images generally agree with the mineralogical identification obtained by DRX. It is important to point out that the methodology developed in this research is considered to be suitable to carry out in-depth more detailed local studies of the possible stratification of saline compounds on walls, unlike other traditional analytical techniques with which only global compositional variations are obtained.
PB Elsevier
YR 2013
FD 2013
LK https://hdl.handle.net/10433/26367
UL https://hdl.handle.net/10433/26367
LA en
NO Construction and Building Materials Volume 45, August 2013, Pages 95-105
NO Universidad Pablo de Olavide. Departamento de Sistemas Físicos, Químicos y Naturales
DS RIO
RD May 22, 2026